Update golang Docker tag to v1.25.4

Author: renovate[bot]

Dockerfile

@@ -16,7 +16,7 @@ WORKDIR /build
 RUN git clone https://github.com/JonasProgrammer/docker-machine-driver-hetzner . && git checkout "${DOCKER_MACHINE_DRIVER_HETZNER_VERSION}" && rm -rf .git
 
 
-FROM golang:1.22.3-alpine@sha256:7e788330fa9ae95c68784153b7fd5d5076c79af47651e992a3cdeceeb5dd1df0 AS builder-go
+FROM golang:1.25.4-alpine@sha256:d3f0cf7723f3429e3f9ed846243970b20a2de7bae6a5b66fc5914e228d831bbb AS builder-go
 
 ARG BUILD_USER_UID=76543
 ARG BUILD_USER_GID=76543